DetailsThe Razertip Dual Burner has the same power supply components as the single burner. The only difference is that you are able to have two pens plugged in simultaneously. The burner heats one pen at a time with the flip of a switch. The burner comes with on Heavy Duty Cord and One Heavy Duty Large Skew pen. The Razertip woodburners come with the best warranty in the industry (3 years on the power supply and 1 year on the handpieces).